Signed-off-by: Sheng Yang <sheng@xxxxxxxxxxxxxxx>
---
kernel/external-module-compat-comm.h | 13 +++++++++++++
kernel/external-module-compat.c | 7 +++++++
2 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/kernel/external-module-compat-comm.h b/kernel/external-module-compat-comm.h
index c955927..5fb34c4 100644
--- a/kernel/external-module-compat-comm.h
+++ b/kernel/external-module-compat-comm.h
@@ -757,3 +757,16 @@ static inline struct page *compound_head(struct page *page)
}
#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
+#define IOMMU_CAP_CACHE_COHERENCY 0x1
+#define IOMMU_CACHE (4)
+#endif
+
+#include <linux/iommu.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
+
+int iommu_domain_has_cap(struct iommu_domain *domain, unsigned long cap);
+
+#endif
diff --git a/kernel/external-module-compat.c b/kernel/external-module-compat.c
index 0d858be..ac8bff7 100644
--- a/kernel/external-module-compat.c
+++ b/kernel/external-module-compat.c
@@ -352,3 +352,10 @@ unsigned kvm_get_tsc_khz(void)
}
#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
+int iommu_domain_has_cap(struct iommu_domain *domain, unsigned long cap)
+{
+ return 0;
+}
+#endif
--
1.5.4.5
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